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Nanotechnology Spotlight – Latest Articles

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Showing Spotlights 9 - 16 of 2140 in category (newest first):

 

Nanotechnology makes for better hair care products and textile microfibers

clay-nanotubesNanotechnology researchers now have developed a natural and non-damaging hair surface engineering technique for making hair coloring formulations that do not use any chemical reactions but instead relies only on physical forces acting at a very close range. The same surface engineering approach is applicable to textile microfiber modifications because natural textiles like like wool, silk, cellulose, but also biomimetic synthetic textiles, have similar chemical composition.

Aug 30th, 2018

Crystalline structure 'a la carte' - Laser-assisted photoactivation of TiO2 films at room temperature and ambient air

crystalline_nanostructureAchieving high-quality crystalline TiO2 films at room-temperature remains one of today's most important technical challenges toward low-cost optoelectronic devices including photovoltaic cells and photocatalytic device architectures. A research team has now demonstrated a simple method for triggering the crystallization of a TiO2 sol-gel precursor at low-energies. With this technique, it is now possible to achieve 90% crystallinity without metallic dopants, at room temperature and in ambient air, using low-power laser-induced photoactivation of an amorphous TiO2 nanoparticle film.

Aug 23rd, 2018

Novel tissue engineering scaffolds fabricated via controlled ice crystallization

nanofibersBy employing 3D scaffolds with both aligned nanofibers and aligned interconnected macrochannels, researchers have taken a nanotechnology-based tissue engineering approach to accelerate the regeneration and repair of damaged tissues at the wound site by directing cells and tissues to grow towards the target site. Their hope is that this leads to the development of affordable and functional biodegradable wound dressings for accelerated healing of chronic skin wounds by promoting regeneration of local tissues.

Aug 16th, 2018

Opto-thermoplasmonic patterning of 2D materials

thermoplasmonicsResearchers have developed an all-optical lithographic technique called 'optothermoplasmonic nanolithography' (OTNL) to achieve high-throughput, versatile, and maskless patterning of different atomic layers. Taking graphene and molybdenum disulfide monolayers as examples, the team shows that both thermal oxidation and sublimation in the light-directed temperature field can lead to direct etching of the atomic layers. They further demonstrates programmable patterning of 2D materials into complex and large-scale nanostructures by steering the laser beam.

Aug 14th, 2018

Five ways that natural design could inspire human nanotechnology

butterflyThough nanotechnology is portrayed as a fairly recent human invention, nature is actually full of nanoscopic architectures. They underpin the essential functions of a variety of life forms, from bacteria to berries, wasps to whales. In fact, tactful use of the principles of nanoscience can be traced to natural structures that are over 500m-years-old. Below are just five sources of inspiration that scientists could use to create the next generation of human technology.

Aug 13th, 2018

Pushing atoms by picometers tunes nanoparticle catalysis

catalysisBy combining advanced high-precision electron microscopy and computational methods, researchers have shed new light on the role of strain in nanoparticle catalysis. Catalytic metal nanoparticles supported on oxide substrates are used on a large scale in technological applications such as production of chemicals, abatement of air pollution and sustainable energy systems. The overall performance and durability of these systems is influenced by a range of factors, and every improvement could result in noticeable environmental and economic benefits.

Jul 31st, 2018

Femtosecond laser creates nanoelectronics on graphene

graphene_nanoelectronicsTraditional CMOS technology cannot be directly merged with graphene applications. Photo- and electron-based lithographies, which are the main processess in today's semiconductor industry, requires use of polymers and harsh liquids that can drastically alter the initial properties of graphene. Thus graphene requires the development of novel processing technologies. A international team of researchers now has developed a method for direct, on-the-fly reconstruction of graphene properties.

Jul 30th, 2018

On the edge: turning graphene into a molecular toggle switch

boron_hexide_nitrideAn international team of researchers has discovered a new mechanism for controlling electronic devices using molecules. The ferroelectric ordering of polar molecules attached to the edge of graphene can be toggle-switched by an electrostatic gate and can be used for memory devices and sensors. For this work, the team sandwiched graphene layers in hexagonal boron nitride crystals. The trick is to control the edge chemistry. The researchers attached different atoms to the graphene edges, before exposing them to water vapor and other polar molecules.

Jul 27th, 2018